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External fuel pump recommendation

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Old Dec 22, 2009 | 10:39 PM
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Default External fuel pump recommendation

Would like to go with an external fuel pump and regulator for the late model LT1 going into the 68. Any recommendations? Brands? Specs?
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Old Dec 23, 2009 | 01:01 AM
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I'm interested also

Here's one I've been checking out:

http://treperformance.com/i-133255-u...fuel-pump.html
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Old Dec 23, 2009 | 01:18 AM
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Unless You like to sound of the Dentist Drilling Your Teeth I would put the Pump inside the Tank. You will find a number of proven ways to do this here on the site. There are a number of pumps both aftermarket and OEM wich would do the job. You can modify your tank or buy a Custom Stainless tank all ready to go. The late Sharks 78-82 have a larger opening at the fill wich makes putting a Pump in the tank easyer. The early tanks you can cut a new hole beside the stock fill hole and then cover it with a plate. The late tanks won't fit your car. Its been talked about here that a 77 tank is the in-between tank and it should fit Your car and have the larger opening. If so it should also have the fuel bladder the late tanks have making it that much safer to use. This is a Question for somebody with a 77 who knows there tanks better than me. The 1982 Gm put the Pump in the tank but the Pump isn't up to snuff for a LT1. I copied there design and Put a Bosch Pump in my 80'. Search the site and you will find a lot of ways to do this it has been done many times.
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Old Dec 23, 2009 | 01:49 AM
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Randy, that Wallbro 255lph pump is the same one that Summit sells for less $$$. Nothing wrong with it, just use rubber isolation mounts when installing.
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Old Dec 23, 2009 | 08:06 AM
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Originally Posted by Solid LT1
Randy, that Wallbro 255lph pump is the same one that Summit sells for less $$$. Nothing wrong with it, just use rubber isolation mounts when installing.
I have been running the Walbro pump on mine. It is very quiet. As good if not better than most of the intank pumps I have heard. Here is my setup not. My FI runs at about 40 PSI and I have my regulator on the fuel rail.

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Old Dec 23, 2009 | 09:03 AM
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Originally Posted by Gordonm
I have been running the Walbro pump on mine. It is very quiet. As good if not better than most of the intank pumps I have heard. Here is my setup not. My FI runs at about 40 PSI and I have my regulator on the fuel rail.

Can you share more details on that setup? And approximate costs?
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Old Dec 23, 2009 | 09:26 AM
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Sure can. I ran a #8 line from the bottom of the tank. I just used a #8 bung in the lowest part of the tank. I put in a shut off valve as you can see right before the fuel pump. This way I can disconnect the fuel system lines anywhere without the worry of fuel going everywhere. This came in handy as now I have the motor out of the car and just shut off the fuel lines. I originally ran #6 braided line the rest of the setup but the fuel lines let off a fuel vapor and stunk up the garage. I have since as you can see ran a aluminum fuel line from the filter to right before the fuel rail in the engine compartment. I have a Mallory fuel regulator mounted on the fuel rails. I used the stock fuel line for a return line back to the tank. Cost I don't have an exact number because it has been changed a few times but I would suspect it would be in the 500 to 600 dollar range with all the fittings and line and pump and filters and so on. You could do it cheaper but I have never gone the cheapest route before. Any other questions let me know, I'd be happy to answer. Here you can see the regulator at the back of the fuel rail.

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